<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/img/logo.png" alt="" />
      </div>
      <!-- 登录表单区域-->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="login_FormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名-->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码-->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 登录按钮区域-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      //表单验证规则对象
      login_FormRules: {
        //验证用户名是否合法
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3~10之间', trigger: 'blur' },
        ],
        //验证密码是否合法
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在6~15之间', trigger: 'blur' },
        ],
      },
    }
  },
  methods: {
    //点击重置按钮，重置登录表单的功能
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)

        if (res.meta.status !== 200)
          return this.$message.error('用户名或密码错误，登录失败！')
        this.$message.success('登录成功')

        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style lang="less" scoped>
.login_container {
  background: url(../assets/img/wallpaper.jpg);
  background-size: 100%;
  background-repeat: no-repeat;
  height: 100%;
}
.login_box {
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: #fff;
  width: 450px;
  height: 300px;
  border-radius: 25px;
  text-align: center;
  padding: 5px 40px;
  box-sizing: border-box;
  transform: translate(-50%, -50%);
  .avatar_box {
    position: absolute;
    height: 130px;
    width: 130px;
    border: 1px sold #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    transform: translate(-50%, -50%);
    background-color: #fff;
    left: 50%;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .btns {
    display: flex;
    justify-content: flex-end;
  }
}
.login_form {
  position: absolute;
  width: 80%;
  bottom: 0;
  padding: 0 5px;
  box-sizing: border-box;
}
</style>
